Hot spot on home transfer to video/telecine

[Chris-B]

How do you guys get rid of the hot spot on your transfers?
The hot spot effect is where you have the image looking brighter in the middle and darker around the edges right?

I though it was just something that you could do nothing about. But after reading a couple of posts today about the "HAMA Telecine 3-1" I noticed mention of using a diffuser.
How do you do this, and what would I use to defuse the light?
Where would I put it, behind the film gate? In front or behind the fan blades?

Can you buy something like a pre-defused bulb? Maybe a bulb with fogged glass would help as the one in my projector only has clear glass, will this make a difference?

I will be very grateful of any help anyone can offer,
Chris.

[studiocarter]

http://sauron.mordor.net/dgraft/index.html

Projector bulbs are so hot that you better use heat proof glass that is frosted if you change anything.

Try a different distance from the screen for the projector, different size of image, different distance for the camera. I read somewhere that that eliminated the problem. Try a small back lit projection screen transfer box.

Michael

[jessh]

how are you doing your transfer? Filming from a screen? It is easier to deal with if you use lower watage bulbs and go straight into a camera instead of off a screen (like the videoworkprinter and more professional film chain setups). Diffusion in film to video transfers is a very good thing, no tonly can it help with hot spots but it helps dimish the apearence of some scratches.

~Jess

[digvid]

Before I switched to the Workprinter, here is what I did:

buy a small square piece of frosted glass
buy some flexible magnetic strips with tape backing
cut tiny pieces of the strips and stick to sides of glass
attach glass via magnets over film gate on the side of the gate where the bulb is.

It might also help if you got a lower wattage bulb.

If your projector uses a system where the bulb and film gate are at a 90 degree angle to each other with a reflective mirror in between, you can remove the mirror and wrap aluminum foil (dull side out) around it to diffuse the light.

This should go a long way towards removing any hotspots.

- digvid

[wahiba]

Try filming off a screen with the image the same size as the telecine device screen and compare. A smooth, but not glossy piece of paper seems to work best.

I use an eumig 607 which has a 100w 12 v bulb and a f1.0 lense, which ensures a bright light which my hi-8 camcorder seems to prefer. I have no control over the aperture control.